From 7659093598c593aafb3e3ecd6a1ea9e6e2023faf Mon Sep 17 00:00:00 2001
From: "M. Ian Graham" <games@miangraham.com>
Date: Thu, 23 Jan 2025 12:06:09 +0900
Subject: [PATCH] gpd/pocket-4: default kernel version to 6.12 to fix amdgpu
 error

---
 gpd/pocket-4/default.nix | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/gpd/pocket-4/default.nix b/gpd/pocket-4/default.nix
index d4c9624..36a6a0a 100644
--- a/gpd/pocket-4/default.nix
+++ b/gpd/pocket-4/default.nix
@@ -1,5 +1,5 @@
 { lib, pkgs, ... }:
-let inherit (lib) mkDefault;
+let inherit (lib) mkIf mkDefault;
 in
 {
   imports = [
@@ -11,10 +11,15 @@ in
     ../../common/hidpi.nix
   ];
 
-  boot.kernelParams = [
-    # The GPD Pocket 4 uses a tablet LTPS display, that is mounted rotated 90° counter-clockwise
-    "fbcon=rotate:1" "video=eDP-1:panel_orientation=right_side_up"
-  ];
+  boot = {
+    # As of kernel version 6.6.72, amdgpu throws a fatal error during init, resulting in a barely-working display
+    kernelPackages = mkIf (lib.versionOlder pkgs.linux.version "6.12") pkgs.linuxPackages_latest;
+
+    kernelParams = [
+      # The GPD Pocket 4 uses a tablet LTPS display, that is mounted rotated 90° counter-clockwise
+      "fbcon=rotate:1" "video=eDP-1:panel_orientation=right_side_up"
+    ];
+  };
 
   fonts.fontconfig = {
     subpixel.rgba = "vbgr"; # Pixel order for rotated screen